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The effects of each individual slot on band notch characteristics are also investigated.
This article presents a compact integrated Bluetooth UWB antenna with lower and upper WLAN dual-band notch characteristics for automotive communications.
By etching out two U shaped slots of different length from signal line, band notch characteristics at 5.8 GHz and 8.4 GHz are obtained.
To realize notch characteristics in WiMax (3.3 3.7 GHz) and WLAN (5.15 5.85 GHz) band, two round shaped slots of half wavelength are inserted in radiating patch.
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Complementary Split Ring Resonator slot and S-shaped slot are used to produce band notched characteristics for WiMAX band (3.30 3.60 GHz) and WLAN band (5.10 5.80 GHz) respectively.
This figure shows that by increasing the r n the second notching frequency shifts toward lower frequencies and its bandwidth corresponding increases too. Figure 2 Effect of r n on the antenna's band-notching characteristic.
It can be observed that in this case the first notch's center frequency decreases with the increase of the length of L s. Figure 3 Effect of parameter L s of T-shaped stub on the antenna's band-notching characteristic.
The proposed circuit can produce second-order low pass, band pass, high pass, all pass, and notch filter characteristics.
A notch band characteristic is obtained by using the radial-loaded stub resonator.
The notch band characteristic is obtained by integrated two-quarter wavelength folded strip resonators into the patch antenna.
The symbols in Fig. 1(a): a o, D, h and t are half of the initial notch-length, characteristic dimension as specimen size (D = h/2), height or total depth and half of the width of distributed load respectively for STC geometry.
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